We were travelling to a social event near Stone , Stafford. On a garage roof there was a fair sized greenhouse in use :) Good use of space!
Here was mine in the process of being glassed up.. and other stuff on my roof top garden. I grew on my roof for many years before I got my allotment..
(http://www.copy-cats.info/veg/Images/rooftop/9_rs.jpg)
(http://www.copy-cats.info/veg/Images/rooftop/2_rs.jpg)
Take a look at my blog page here... http://www.copy-cats.info/veg/veg.HTM